Detachable link.



E. s. SMITH. DBTACHABLE LINK. APPLIOATION TILED MAR. 30, 1914.

ygly' Patented Dec.22,1914

lcitizen ot the United States,

EZB/A S. SMITH, OF .ATTLEBORQ IYIASSACHUSETTS, ASSIGNOR COMPANY, ACORPORATION OF RHODE ISLAND.

DETACHABLE LINK.

Specification of Letters Patent.

ln lentcd Dec. 22, l-t.

Application filed March 30, 1914. Serial No. 325.161..

To aZZ 'ir/ont it' may concern.'

Be it known that I, Ezine S. Snr'rn, a. residing at Attleboro, in thecounty ot Bristol and State of 'illassaehusctts have invented eertainnew and useful Improvements in De tachable Links, of which theti'illowing is a specification.

My invent-ion relates t-o detachable links for expansible bracelets, andhas for its essential objects the provision in this class of cha-inbracelets of means lfor rendering an apparently endless chain or Circletseparable or disconnected at soine point in the circlet; to render theattachingT and detaching ine-ans inconspicuous, and to insure aInaxiininn oi strength ot structure, and facility and etlectiveness ofoperation. lt has been sought to ei'iect these ends by eutting away aportion of the exposed l'ront tace ot a link, `which has resulted in anunsightliy appearance and in arring of the structure: and this attempthas always been accompanied by the requirement ot' the insertion or'soine small auxiliary link, which besides involving an .increase olexpense, broke the regular contour ot the bracelet body, and detractedfrom the expansion ot the bracelet.

Further objects of this invention are to specinii'ally overcome theenumerated disadvantages.

In the accompanying drawings `which i'orin a part of this specification,Figures l and L are plan and front elevations respec* tively ot abracelet embodying in v invention. Figs. 3 and el, enlarged frontelevations ot' the connecting portion ot' the saine in closed and openpositions respectively, Fig. 5, an enlarged section ot the connectingportion on line u). u?, otl Fig. Q, Fig'. (i, a Section on line ir.- a'.of Fig: 5, Figs. i" and 8, enlarg'ed sections ot' the connecting portionin open position taken on lines u', w, of Fig. 2, and a', a'. ot' Fig. 5respectively, and Figs. 9 and l() transverse sections taken on lines y,7/, and e. .2, ot' Fig. 8.

Like reference characters indicate like parts throughout the views.

The bracelet comprises in series aplurality ot' intern'iediate linksslidably embraced hy lateral links B. The links A are longitudinallycurved and have integral With or fixed to one end laterallyr extendingguides cz. The links B are alternately disposed vvith relation to the.central links QL which they cnibrace` and constitute lraines. ln` detailcach traine l5 comprises parallel shells b comprising marginal internalllanges said shells being?r connected near their ends 'o v posts (lattached b v solder or otherwise. llclical spriings l) are lhfalcdbetween the post ol" one link` auddhe. inner end of the central link.

All the links oi" the bracelet are ot the construction already described`ivith the exception ot' one central link und one lateral link, whichexceptional links or units will now be described. central link Y isprovided which is similar to the links A except that the former is.sonicvvhat longer. lfixed bv solder to or integral with the link Aaloni,r the major portion oi' its open sides are lateral plates otsubstantially the suine .torni and dinieusious as the plates o, andproyided with the inturncd flanges l. The

.plates or' complete a link portion B" which has thc appearance ot' thelinksl il. although their fixed relation with thc intermediate member Aconstitutes in. reality u single link closed upon all sides exceptthatia resultant oikieuingiV occurs through each end ol' the link as atd. due to the shorter length of the plates relatively to the length olthe incinber il. '.l`hroue'h these open portions Z through each end ot'the described link L)ass the posts C of the adjacent links.

The described closed link B is transversely severed so as to divide thelink B into a section lil and a section F. The foi-nier compri.oppositely disposed central lugs c, and the section l" is provided withoppositcljY disposed central rectangular cavities f in which the lugs orprojections e 95 arc adapted to closely lit. Connecting the lugs c is acrosspiece loop or post y through which passes a hook 71., whose shank His lixed by solder or otherwise to the inner face of one of the platesbe of the section 10C F. The opposite plate b2 of the section E isprovided' with an opening I through which loosely passes the thumb piecez fixed to the tace of the spring y' which has one end attached bysolder or otherwise as at la 105 to the inner tace of the shell b2 0Ithe seetion F.

It Will he observed that in closed position the parts of the link B', asshown in Figs.

3, 5, and 6, are in close Contact with each 110 S, with the hookengaging merely the loop g. The tongue h of the hook may then be readilywithdrawn from the crosspiece g, and the parts be thus entirelyseparated. This form ofv bracelet is therefore capable of beingappliedvto wrists of various sizes without being strained by passingover a large hand. It will be observed that the thumb piece is the onlyexposed irregularity upon the face of the bracelet, and that rthismember is located upon a side of the bracelet, and not upon the face ofthe same. The absence of any auxiliary link between the "closed link Band the adjacent links B renders the contour of the braceletsymmetrical, proportionately increases the resiliency of the elements,and decreases the cost of manufacture.

What I claim is,-

l. A detachable link of the type set forth, comprising two transverselyseparable sections comprising central walls and side walls, one of saidside walls being provided v'lth a perforation, a spring upon theperfoi-ated wall and provided with an abutment, a thumb piece upon thespring extending through the perforation, and a resilient hook fixed inthe non-perforated section adapted to engage said abutment.

2. A detachable link of the type set forth, comprising two transverselyseparable closed housing sections, one section being provided with aperforation, a transversely disposed cross-piece in the open end of theperforated section, a i'lat spring fixed at one end in. the perforatedsection, a shoulder on the iixed portion of the spring, a thumb piece onthe spring extending through the perforation, and a hook fixed in thesecond section adapted to extend into the perforated section around theloop in contact with the spring and to abut against the shoulder.

3. A detachable link of the type set forth, comprising two transverselyseparable closed housing sections, one of said sections being providedwith a perforation, lugs upon the perforated section, a cross-piececonnecting the lugs, a spring in said section having a return portionforming a shoulder, a thumb piece on the spring extending into theperforation, the second section being provided with slots to receive thelugs, land a hook in the second section adapted to extend into the firstsection around the crosspiece and to rest upon said spring with its freeend extended toward and in contact with the end of the return portion ofsaid spring.

4. A detachable link of the type set forth, comprising two transverselyseparable closed housing sections, one of said sections being providedwith a perforation, lugs upon the perforated section, a spring in saidsection, a thumb piece on the spring extending into the perforation, thesecond section being provided with slots to receive the lugs, and a hookin the second section in contact with the spring when the link isclosed, the free ends of said hook and spring being extended in oppositedirections.

A detachable link of the type set forth, comprising two transverselyseparable closed housing sections, lugs upon one section, a spring fixedin said section, the second section being provided with slots to receivethe lugs, and a Yhook in the second section engaging the spring, thefree ends of said hook and spring being extended in op posite directionsand the free end of the hook overlapping the free end of the spring andengaging a shoulder on the latter when the link is in closed position.

In testimony whereof I have affixed my signature in presence of twowitnesses.

EZB-A S. SMITH.

Witnesses Einw. II. Zulema, Horario E. BnLLows.

